DMU41 Inertial systems (IMU)

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Key features

• Precision MEMS Inertial Measurement Unit
• Silicon Sensing’s class leading VSG3QMAX inductive gyro and capacitive accelerometer MEMS
• Excellent Bias Instability and Random Walk: Angular - 0.1°/hr, 0.02°/√hr Linear - 15μg, 0.05m/s/√hr
• Non-ITAR
• Compact and lightweight - 50.5 x 50.5x 51.0 (mm), <178g
• Internal power conditioning to accept 5V to 32V input voltage
• External synchronisation (PPS, external trigger)
• RS422 interface and sync pulse output
• -40°C to +85°C operating temperature range
• User configurable interface
• Low power consumption <1.8W
• Sealed aluminium housing (IP67)
• 3-axis magnetometer output
• Designed to support RTCA/DO-160, DO-178, DO-254 certification
• RoHS compliant
• In-house manufacture from MEMS fabrication to IMU calibration
• Evaluation kit and integration resources available
• First class customer technical support

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About the DMU41 High-Performance Inertial Measurement Unit (IMU)

Compact High-End IMU with Outstanding Performance
The DMU41 is a high-precision inertial measurement unit (IMU) that measures motion across six degrees of freedom – offering accuracy that outperforms many larger, heavier, more expensive, and less reliable fiber-optic gyro systems.

As an affordable MEMS-based alternative, it is not subject to ITAR restrictions and is ideal for demanding applications where size, weight, power, and cost (SWaP-C) matter.

Building on the proven performance of the DMU30, the DMU41 is even smaller and lighter, with added user features. It has a volume of just 125 cm³, weighs less than 170 g, and consumes less than 2.5 W of power.

It delivers data rates up to 2 kHz, including:

• Angular velocity
• Acceleration
• Delta angle & delta velocity
• Temperature
• Built-in self-test results

Despite its compact size, the DMU41 offers the same high-quality performance as its predecessor – at half the size and weight. Each unit is individually calibrated across the full operating temperature range to ensure consistent and accurate results.

Key benefits

• Outstanding stability & low noise: bias instability (mean) < 0.1°/hr and angle random walk < 0.02°/√hr
• Wide dynamic ranges: rate range ±490°/s, acceleration range ±10 g
• Compact SWaP: 50.5 × 50.5 × 51.0 mm, < 178 g, low power consumption < 1.8 W
• Easy integration: internal power conditioning for 5–32 V supply
• Interfaces & timing: RS422 interface, sync pulse output, external synchronisation (PPS / external trigger)
• Rugged design: sealed aluminium housing IP67, operating temperature −40°C to +85°C
• Flexible outputs: variable output rates up to 2 kHz, including angular rate, acceleration, delta angle/velocity, temperature and built-in test results

Typical applications

Ideal for guidance, navigation and control, platform/camera stabilisation, surveying & mapping, and other high-end industrial or aerospace systems where precision, robustness and low SWaP are critical.

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